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Finding the Fourth Proportional to 347,408.70, 520,335.45 and 268,266.30

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Solution

The fourth proportional to 347,408.70, 520,335.45 and 268,266.30 is: 401,798.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,408.70 : 520,335.45 = 268,266.30 : x
  2. Step 2: Convert to fraction form
    347,408.70/520,335.45 = 268,266.30/x
  3. Step 3: Cross multiply
    347,408.70x = 520,335.45 × 268,266.30
  4. Step 4: Simplify right side
    347,408.70x = 139,588,465,930.34
  5. Step 5: Solve for x
    x = 139,588,465,930.34/347,408.70
  6. Step 6: Final answer
    x = 401,798.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.